Teensy - compile sketch fails, clear out %temp% build completes

[KurtE]

This is I believe the third time I have had this, happen in about a week. Some of it may have to do with updating to different version of boards, but maybe not.

Not sure of exact steps:
I am currently running nightly build 20230401

This morning I compiled a few things with the newly released version of the Teensy install
(1.58.0). Paul has now released a new beta build 1.59.1 which he has labeled as
0.59.1 as to keep all users that are running a released version like the 1.58.0 from being prompted if they wish to update each time Arduino installs.

I then built a sketch, in this case my picture viewer which displays images off of an SD card onto a display, currently configured for RA8876, and which you can update the files on the SD over MTP: KurtE/mtp_tft_picture_view: WIP (github.com)
I configured for T4.1, The correct Com port, and USB type of : Serial + MTP,
I tried building and the link failed:

Compiling core...
Using precompiled core: C:\Users\kurte\AppData\Local\Temp\arduino\cores\teensy_avr_teensy41_101959c6bdaa9a37abb86f6cd0e474a6\core.a
Linking everything together...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-gcc" -O2 -Wl,--gc-sections,--relax "-TC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4/imxrt1062_t41.ld" -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\sketch\\mtp_tft_picture_view.ino.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SPI\\SPI.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SD\\SD.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatDbg.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFilePrint.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFileWrite.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFormatter.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatPartition.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\upcase.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatDbg.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFileLFN.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFilePrint.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFileSFN.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFormatter.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatPartition.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FreeStack.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsNew.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\MinimumSerial.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdCardInfo.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdSpiCard.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdioTeensy.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiArtemis.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiChipSelect.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiDue.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiESP.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiParticle.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiSTM32.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiSTM32Core.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiTeensy3.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FmtNumber.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsCache.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsDateTime.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsStructs.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsUtf.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\PrintBasic.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\upcase.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\StdioStream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\StreamBaseClass.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\istream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\ostream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_SD_Callbacks.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_Storage.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_Teensy.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_USBFS_Callbacks.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\JPEGDEC\\JPEGDEC.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\PNGdec.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\adler32.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\crc32.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\infback.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inffast.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inflate.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inftrees.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\zutil.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Ra8876LiteTeensy\\Ra8876LiteTeensy.a" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\Wire.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\WireIMXRT.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\WireKinetis.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\utility\\twi.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/..\\..\\cores\\teensy_avr_teensy41_101959c6bdaa9a37abb86f6cd0e474a6\\core.a" "-LC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE" -larm_cortexM7lfsp_math -lm -lstdc++
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::begin()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:91: undefined reference to `usb_mtp_rxSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::receive_bulk(unsigned long)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1594: undefined reference to `usb_mtp_recv'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::read(void*, unsigned long)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1418: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::receive_bulk(unsigned long)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1594: undefined reference to `usb_mtp_recv'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1594: undefined reference to `usb_mtp_recv'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::SendObject(MTP_class::MTPContainer&)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:490: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::allocate_transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1613: undefined reference to `usb_mtp_txSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1623: undefined reference to `usb_mtp_send'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1621: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::allocate_transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1613: undefined reference to `usb_mtp_txSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1623: undefined reference to `usb_mtp_send'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1621: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::allocate_transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1613: undefined reference to `usb_mtp_txSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1623: undefined reference to `usb_mtp_send'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::GetObject(MTP_class::MTPContainer&)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:605: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::allocate_transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1613: undefined reference to `usb_mtp_txSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1623: undefined reference to `usb_mtp_send'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::GetPartialObject(MTP_class::MTPContainer&)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:643: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::receive_bulk(unsigned long)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1594: undefined reference to `usb_mtp_recv'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::send_DeviceResetEvent()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1827: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::allocate_transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1613: undefined reference to `usb_mtp_txSize'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::transmit_bulk()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1623: undefined reference to `usb_mtp_send'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::processIntervalTimer()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:315: undefined reference to `usb_mtp_status'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::receive_bulk(unsigned long)':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:1594: undefined reference to `usb_mtp_recv'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE\libraries\MTP_Teensy\MTP_Teensy.cpp.o: in function `MTP_class::_interval_timer_handler()':
c:\Users\kurte\Documents\Arduino\libraries\MTP_Teensy\src/MTP_Teensy.cpp:298: undefined reference to `usb_mtp_status'
collect2.exe: error: ld returned 1 exit status
Multiple libraries were found for "SD.h"
  Used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SD
  Not used: C:\Users\kurte\AppData\Local\Arduino15\libraries\SD
  Not used: C:\Users\kurte\Documents\Arduino\libraries\SD
Multiple libraries were found for "SdFat.h"
  Used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SdFat
  Not used: C:\Users\kurte\Documents\Arduino\libraries\SdFat_-_Adafruit_Fork
Using library SPI at version 1.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SPI 
Using library SD at version 2.0.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SD 
Using library SdFat at version 2.1.2 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SdFat 
Using library MTP_Teensy at version 1.0.0 in folder: D:\github\MTP_Teensy 
Using library JPEGDEC at version 1.2.8 in folder: C:\Users\kurte\Documents\Arduino\libraries\JPEGDEC 
Using library PNGdec at version 1.0.1 in folder: C:\Users\kurte\Documents\Arduino\libraries\PNGdec 
Using library Ra8876LiteTeensy at version 1.0.0 in folder: D:\github\Ra8876LiteTeensy 
Using library Wire at version 1.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\Wire 
exit status 1

So I then exited Arduino and went to my temp directory: %temp%
and I deleted all files/directories like:
Arduino*.*
*.clangd

I started up Arduino again and did the upload command again this time:

Linking everything together...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-gcc" -O2 -Wl,--gc-sections,--relax "-TC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4/imxrt1062_t41.ld" -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\sketch\\mtp_tft_picture_view.ino.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SPI\\SPI.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SD\\SD.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatDbg.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFilePrint.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFileWrite.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatFormatter.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatPartition.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\ExFatVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\ExFatLib\\upcase.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatDbg.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFileLFN.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFilePrint.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFileSFN.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatFormatter.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatPartition.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FatLib\\FatVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FreeStack.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsFile.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsNew.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\FsLib\\FsVolume.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\MinimumSerial.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdCardInfo.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdSpiCard.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SdCard\\SdioTeensy.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiArtemis.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiChipSelect.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiDue.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiESP.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiParticle.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiSTM32.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiSTM32Core.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\SpiDriver\\SdSpiTeensy3.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FmtNumber.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsCache.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsDateTime.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsName.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsStructs.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\FsUtf.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\PrintBasic.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\common\\upcase.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\StdioStream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\StreamBaseClass.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\istream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\SdFat\\iostream\\ostream.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_SD_Callbacks.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_Storage.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_Teensy.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\MTP_Teensy\\MTP_USBFS_Callbacks.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\JPEGDEC\\JPEGDEC.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\PNGdec.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\adler32.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\crc32.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\infback.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inffast.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inflate.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\inftrees.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\PNGdec\\zutil.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Ra8876LiteTeensy\\Ra8876LiteTeensy.a" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\Wire.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\WireIMXRT.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\WireKinetis.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE\\libraries\\Wire\\utility\\twi.c.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/core\\core.a" "-LC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE" -larm_cortexM7lfsp_math -lm -lstdc++
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.eep"
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-objcopy" -O ihex -R .eeprom "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.hex"
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/teensy_secure" encrypthex TEENSY41 "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.hex"
encrypting 212992 bytes to C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.ehex
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/teensy_post_compile" -file=mtp_tft_picture_view.ino "-path=C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE" "-tools=C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/" -board=TEENSY41
Opening Teensy Loader...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/stdout_redirect" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.sym" "C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-objdump" -t -C "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf"
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/teensy_size" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf"
Memory Usage on Teensy 4.1:
  FLASH: code:170408, data:41692, headers:9080   free for files:7905284
   RAM1: variables:111072, code:164472, padding:32136   free for local variables:216608
   RAM2: variables:28800  free for malloc/new:495488
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/stdout_redirect" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.lst" "C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-objdump" -d -S -C "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\479771791AB690CB5AEED20B64877CBE/mtp_tft_picture_view.ino.elf"
Multiple libraries were found for "SD.h"
  Used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SD
  Not used: C:\Users\kurte\AppData\Local\Arduino15\libraries\SD
  Not used: C:\Users\kurte\Documents\Arduino\libraries\SD
Multiple libraries were found for "SdFat.h"
  Used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SdFat
  Not used: C:\Users\kurte\Documents\Arduino\libraries\SdFat_-_Adafruit_Fork
Using library SPI at version 1.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SPI 
Using library SD at version 2.0.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SD 
Using library SdFat at version 2.1.2 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\SdFat 
Using library MTP_Teensy at version 1.0.0 in folder: D:\github\MTP_Teensy 
Using library JPEGDEC at version 1.2.8 in folder: C:\Users\kurte\Documents\Arduino\libraries\JPEGDEC 
Using library PNGdec at version 1.0.1 in folder: C:\Users\kurte\Documents\Arduino\libraries\PNGdec 
Using library Ra8876LiteTeensy at version 1.0.0 in folder: D:\github\Ra8876LiteTeensy 
Using library Wire at version 1.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1\libraries\Wire 
"C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\tools\teensy-tools\0.59.1/teensy_post_compile" "-file=mtp_tft_picture_view.ino" "-path=C:\Users\kurte\AppData\Local\Temp\arduino\sketches\479771791AB690CB5AEED20B64877CBE" "-tools=C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\tools\teensy-tools\0.59.1" "-board=TEENSY41" -reboot "-port=usb:0/140000/0/8/4" "-portlabel={serial.port.label}" "-portprotocol={serial.port.protocol}"

As I mentioned at the start this is I believe the third (maybe forth) time this week, I have hit something like this. And before this, it had been a long time since I had an issue like this.

Not sure if something changed in the recent nightly builds that might cause this?

EDIT: One thought on maybe something to do with caching. The previous sketch I built for Triple Serial, and then I changed to the Serial + MTP. The MTP code will not be generated unless the USB type is either MTP or Serial + MTP. So maybe the code that decides to use the cached version or needs to rebuild did not take this into effect?

[ptillisch]

I remember seeing a couple other reports of problems with compilation that were solved by clearing the temporary folder:

Too Many Temporary FIles Makes Error (informational)

I got the following error that started popping up: internal error in mingw32_gt_pch_use_address, at config/i386/host-mingw32.c:190: MapViewOfFileEx: Attempt to access invalid address. exit status 1 Compilation error: exit status 1 I got it to go away by deleting the temporary files in my user appdata folder. I have done a lot of compilations since I last deleted it. It would appear at some point the shear volume causes things to break. But all good now. Wes

Internal error in mingw32_gt_pch_use_address

Hi, I got that error while compiling using arduino IDE 2.0.4, I tried to reinstall it but w/o success. internal error in mingw32_gt_pch_use_address, at config/i386/host-mingw32.c:190: MapViewOfFileEx: Tentative d�acc�s � une adresse non valide. exit status 1 Compilation error: exit status 1 I can't compile and upload any more. Teensy 4.1 That is from today and use to work till now, didn't change the code itself. Any clue ?

Those did have a different error message so it is possible yours is different, but I notice that all three are from Teensy users and I don't remember any other reports of compilation problems related to the number of temporary files from non-Teensy users.

[KurtE]

Thanks,

As I eluded to in my edit of the first post and since then posted on pjrc forum:

But as I finished writing that up on their forum, I started to wonder, when I do a new build, what decides which files that need to be recompiled and which ones it can use the object file from the previous build?

Does it take into effect that the USB option type changed? As the previous build I did was for USB type of triple Serial and then I changed to Serial + MTP and the build failed to get any of the usb_mtp.cpp symbols out of core.

Specifically usb_mtp.c has in it:

#include "usb_dev.h"
#include "usb_mtp.h"
#include "avr/pgmspace.h" // for PROGMEM, DMAMEM, FASTRUN
#include "core_pins.h" // for yield(), millis()
#include <string.h>    // for memcpy()
//#include "HardwareSerial.h"

#include "debug/printf.h"
#ifdef MTP_INTERFACE // defined by usb_dev.h -> usb_desc.h

So previous build for different USB type, this file would not generate anything.
But this build, the command line argument: -DUSB_MTPDISK_SERIAL
will be seen in usb_desc.h which is included by usb_mtp.h, and defines:
#define MTP_INTERFACE 2 // MTP Disk

[KurtE]

@ptillisch (Paul ... over in PJRC)

I sort of confirmed, things are not getting rebuilt when I change USB Type.
That is in one window I have been now building with USB type of MTP... and in another window I have a different sketch, probably not important ,but just in case

/* USB to Serial - Teensy becomes a USB to Serial converter
   http://dorkbotpdx.org/blog/paul/teensy_as_benito_at_57600_baud

   You must select Serial from the "Tools > USB Type" menu

   This example code is in the public domain.
*/

// set this to the hardware serial port you wish to use
#define HWSERIAL Serial1
#define HWSERIAL1 Serial2
#define HWSERIAL2 Serial3

unsigned long baud[3] = {115200, 115200, 19200};
unsigned char prev_dtr[3] = {0, 0, 0};

const int reset_pin[3] = {4, 3, 4};
const int led_pin = 13;  // 13 = Teensy 3.X & LC
// 11 = Teensy 2.0
//  6 = Teensy++ 2.0
void setup()
{
  pinMode(led_pin, OUTPUT);
  digitalWrite(led_pin, LOW);
  digitalWrite(reset_pin[0], HIGH);
  pinMode(reset_pin[0], OUTPUT);
  Serial.begin(baud[0]);	// USB, communication to PC or Mac
  HWSERIAL.begin(baud[0]);	// communication to hardware serial
#if defined(USB_DUAL_SERIAL) || defined(USB_TRIPLE_SERIAL)
  digitalWrite(reset_pin[1], HIGH);
  pinMode(reset_pin[1], OUTPUT);
  SerialUSB1.begin(baud[1]);
  HWSERIAL1.begin(baud[1]);
#endif
#if defined(USB_TRIPLE_SERIAL)
  digitalWrite(reset_pin[2], HIGH);
  pinMode(reset_pin[2], OUTPUT);
  SerialUSB2.begin(baud[2]);
  HWSERIAL2.begin(baud[2]);
#endif

}


long led_on_time = 0;
#define BUFFER_SIZE 512
byte buffer[BUFFER_SIZE];

void loop()
{

  // first do the simple stuff.
  processUSBToSerial(0, &Serial, &HWSERIAL, Serial.dtr(), Serial.baud());
#if defined(USB_DUAL_SERIAL) || defined(USB_TRIPLE_SERIAL)
  processUSBToSerial(1, &SerialUSB1, &HWSERIAL1, SerialUSB1.dtr(), SerialUSB1.baud());
#endif
#if defined(USB_TRIPLE_SERIAL)
  processUSBToSerial(2, &SerialUSB2, &HWSERIAL2, SerialUSB2.dtr(), SerialUSB2.baud());
#endif

  // if the LED has been left on without more activity, turn it off
  if (millis() - led_on_time > 3) {
    digitalWrite(led_pin, LOW);
  }
}

//=========================================================================
// Process for one USB to Serial connection.
// Wish USB Serial classes derived from common class other than Stream.
//=========================================================================
void processUSBToSerial(uint8_t serial_index, Stream* usbStream, HardwareSerial *hwserial,
                        unsigned char dtr, unsigned long usb_baud)
{
  int rd, wr, n;

  // check if any data has arrived on the USB virtual serial port
  rd = usbStream->available();
  if (rd > 0) {
    // check if the hardware serial port is ready to transmit
    wr = hwserial->availableForWrite();
    if (wr > 0) {
      // compute how much data to move, the smallest
      // of rd, wr and the buffer size
      if (rd > wr) rd = wr;
      if (rd > 80) rd = 80;
      // read data from the USB port
      n = usbStream->readBytes((char *)buffer, rd);
      // write it to the hardware serial port
      hwserial->write(buffer, n);
      // turn on the LED to indicate activity
      digitalWrite(led_pin, HIGH);
      led_on_time = millis();
    }
  }

  // check if any data has arrived on the hardware serial port
  rd = hwserial->available();
  if (rd > 0) {
    // check if the USB virtual serial port is ready to transmit
    wr = usbStream->availableForWrite();
    if (wr > 0) {
      // compute how much data to move, the smallest
      // of rd, wr and the buffer size
      if (rd > wr) rd = wr;
      if (rd > 80) rd = 80;
      // read data from the hardware serial port
      n = hwserial->readBytes((char *)buffer, rd);
      // write it to the USB port
      usbStream->write(buffer, n);
      // turn on the LED to indicate activity
      digitalWrite(led_pin, HIGH);
      led_on_time = millis();
    }
  }

  // check if the USB virtual serial port has raised DTR
  if (dtr && !prev_dtr[serial_index]) {
    digitalWrite(reset_pin[serial_index], LOW);
    delayMicroseconds(250);
    digitalWrite(reset_pin[serial_index], HIGH);
  }
  prev_dtr[serial_index] = dtr;

  // if the LED has been left on without more activity, turn it off
  if (millis() - led_on_time > 3) {
    digitalWrite(led_pin, LOW);
  }

  // check if the USB virtual serial wants a new baud rate
  if (usb_baud != baud[serial_index]) {
    baud[serial_index] = usb_baud;
    if (usb_baud == 57600) {
      // This ugly hack is necessary for talking
      // to the arduino bootloader, which actually
      // communicates at 58824 baud (+2.1% error).
      // Teensyduino will configure the UART for
      // the closest baud rate, which is 57143
      // baud (-0.8% error).  Serial communication
      // can tolerate about 2.5% error, so the
      // combined error is too large.  Simply
      // setting the baud rate to the same as
      // arduino's actual baud rate works.
      hwserial->begin(58824);
    } else {
      hwserial->begin(usb_baud);
    }
  }
}

I then go switch the MTP type back to "Tripple Serial"
And try and do a build:

Decides the whole core.a is fine and then link fails:

Using board 'teensy41' from platform in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1
Using core 'teensy4' from platform in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.59.1
Detecting libraries used...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -std=gnu++17 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=159 -DARDUINO=10607 -DARDUINO_TEENSY41 -DF_CPU=600000000 -DUSB_TRIPLE_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\sketch\\USBtoSerialMulti.ino.cpp" -o nul
Generating function prototypes...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-g++" -E -CC -x c++ -w -g -Wall -ffunction-sections -fdata-sections -nostdlib -std=gnu++17 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=159 -DARDUINO=10607 -DARDUINO_TEENSY41 -DF_CPU=600000000 -DUSB_TRIPLE_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\sketch\\USBtoSerialMulti.ino.cpp" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\preproc\\ctags_target_for_gcc_minus_e.cpp"
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\builtin\\tools\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.59.1/precompile_helper" "C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1/cores/teensy4" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14" "C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-g++" -x c++-header -O2 -flto -fno-fat-lto-objects -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -std=gnu++17 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=159 -DARDUINO=10607 -DARDUINO_TEENSY41 -DF_CPU=600000000 -DUSB_TRIPLE_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1/cores/teensy4" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14/pch/Arduino.h" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14/pch/Arduino.h.gch"
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-g++" -c -O2 -flto -fno-fat-lto-objects -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -std=gnu++17 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=159 -DARDUINO=10607 -DARDUINO_TEENSY41 -DF_CPU=600000000 -DUSB_TRIPLE_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14/pch" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\sketch\\USBtoSerialMulti.ino.cpp" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\sketch\\USBtoSerialMulti.ino.cpp.o"
Compiling libraries...
Compiling core...
Using precompiled core: C:\Users\kurte\AppData\Local\Temp\arduino\cores\teensy_avr_teensy41_101959c6bdaa9a37abb86f6cd0e474a6\core.a
Linking everything together...
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1/arm/bin/arm-none-eabi-gcc" -O2 -flto -fno-fat-lto-objects -Wl,--gc-sections,--relax "-TC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\0.59.1\\cores\\teensy4/imxrt1062_t41.ld" -fuse-linker-plugin -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14/USBtoSerialMulti.ino.elf" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14\\sketch\\USBtoSerialMulti.ino.cpp.o" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14/..\\..\\cores\\teensy_avr_teensy41_101959c6bdaa9a37abb86f6cd0e474a6\\core.a" "-LC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\DF3C6F8663ED76A115E18319F4CDED14" -larm_cortexM7lfsp_math -lm -lstdc++
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\AppData\Local\Temp\ccLQXFlU.ltrans0.ltrans.o: in function `loop':
C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `usb_cdc2_line_coding'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `usb_cdc2_line_rtsdtr'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `SerialUSB1'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `usb_cdc3_line_rtsdtr'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `usb_cdc3_line_coding'
c:/users/kurte/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\kurte\Documents\Arduino\USBtoSerialMulti/USBtoSerialMulti.ino:63: undefined reference to `SerialUSB2'
collect2.exe: error: ld returned 1 exit status

exit status 1

Compilation error: exit status 1

Not sure if using two different windows is needed to reproduce, but...

[KurtE]

I opened up a new issue on this:
Caching of core build may get out of sync when doing multiple windows causing build to fail. · Issue #1990 · arduino/arduino-ide (github.com)

[KurtE]

@ptillisch I Should mention, that lots of people, that try the nightly builds are hitting this, with multiple different board types.

Edit: I am hoping that Arduino is not about to release 2.0.5 with this regression. Did not happen on 2.0.4

Work around is to delete the cached cores out of: C:\Users\kurte\AppData\Local\Temp\arduino\cores

Location of temp... will be different from user to user and machine type to machine type (windows, linux, mac)

[KurtE]

Quick update:
It was fixed in the CLI and then yesterday the IDE was updated to use the updated CLI.

There is a fix for this in the Nightly build 20230414